We have used this feature starting on z/OS R6 and it has worked well for
us. It is the recommended configuration. The Communications Server
folks have been good about providing plenty of encouragement and warning
to remove obsolete parameters and leverage features that are recommended
that will become required. TN3270E seems like something you want to do
before you have to.
>From the z/OS R9 Preview "Prior to z/OS V1.6, the TN3270E Telnet server
runs as a subtask of the TCPIP address space. In z/OS V1.6 through z/OS
V1.8, users can run the TN3270E Telnet server as a separately started
address space from TCPIP, or continue to run the TN3270E Telnet server
as a subtask of the TCPIP address space. In z/OS V1.9, the TN3270E
Telnet server is planned to be supported only when run in its own
address space."
Our network team has some automation that does a D
TCPIP,TN3270E,TELNET,CONN command every 30 minutes so they can see the
utilization. If I remember correctly we also had to raise MAXSOCKETS
for INET in our environment. In general watch out for USS limits that
might impact you in TCP/IP. The network team because of this has their
own automation that does a D OMVS,P on a recurring basis and inspects
it.
PARMLIB(BPXPRMxx)
/* */
FILESYSTYPE TYPE(INET) ENTRYPOINT(EZBPFINI)
NETWORK DOMAINNAME(AF_INET)
DOMAINNUMBER(2)
MAXSOCKETS(132000)
TYPE(INET)
INADDRANYPORT(4000)
INADDRANYCOUNT(2000)
On this system MAXSOCKETS is higher than need be but we set this same
across the Sysplex.
D OMVS,P
BPXO046I 14.00.00 DISPLAY OMVS 226
OMVS 000F ACTIVE OMVS=(7A,7S)
PFS CONFIGURATION INFORMATION
PFS TYPE DESCRIPTION ENTRY MAXSOCK OPNSOCK HIGHUSED
INET SOCKETS AF_INET EZBPFINI 132000 24130 24142
UDS SOCKETS AF_UNIX BPXTUINT 2000 28 41
ZFS LOCAL FILE SYSTEM IOEFSCM
TFS LOCAL FILE SYSTEM BPXTFS
HFS LOCAL FILE SYSTEM GFUAINIT
BPXFTCLN CLEANUP DAEMON BPXFTCLN
BPXFTSYN SYNC DAEMON BPXFTSYN
BPXFPINT PIPES BPXFPINT
BPXFCSIN CHARACTER SPECIAL BPXFCSIN
PFS TYPE PARAMETER INFORMATION
HFS VIRTUAL(6144)
CURRENT VALUES: FIXED(0) VIRTUAL(6144)
Also don't forgot to define TN3270E to WLM. You could define it
differently than you defined VTAM but my consideration was I didn't want
any change especially at the same time as the function was being split
out. I defined TN3270E to SYSSTC same as NET was here.
Best Regards,
Sam Knutson, GEICO
Performance and Availability Management
mailto:[EMAIL PROTECTED]
(office) 301.986.3574
"Think big, act bold, start simple, grow fast..."
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